$signature: () !default;
$signature: map-merge(
    (
        padding: 1rem 14px,
        fontSize: 1em,
    ),
    $signature
);
$padding: map-get($signature, padding);
$fontSize: map-get($signature, fontSize);

.custom-signature {
    padding: $padding;
    font-size: $fontSize;
    line-height: 1.5em;
}
